CN1749425A - Producing method for casting large power diesel engine cylinder jacket - Google Patents
Producing method for casting large power diesel engine cylinder jacket Download PDFInfo
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- CN1749425A CN1749425A CN 200510019691 CN200510019691A CN1749425A CN 1749425 A CN1749425 A CN 1749425A CN 200510019691 CN200510019691 CN 200510019691 CN 200510019691 A CN200510019691 A CN 200510019691A CN 1749425 A CN1749425 A CN 1749425A
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- diesel engine
- cylinder jacket
- large power
- engine cylinder
- producing method
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The present invention belongs to the field of casting technology. The casting process of great power diesel engine cylinder jacket includes mixing pig iron 10-20 weight portions, waste steel 40-50 weight portions and returning charge 40-50 weight portions; adding carbon increasing agent and melting; sampling and spectroscopic testing; regulating element contents to required values; and other steps. The present invention has high quality of cast cylinder jacket.
Description
Technical field
The present invention relates to a kind of castmethod of cylinder jacket of diesel engine, the excellent Casting Technology of particularly a kind of two-stroke low speed large power diesel engine cylinder jacket.
Background technology
High strength, high-elongation, the requirement of high-wearing feature characteristic of low speed large power diesel engine cylinder jacket its castings material of residing core position and high temperature, the decision of high pressure a particular job environment in the diesel engine operational process.In the Foundry Production of traditional cylinder sleeve, the melting material is: the pig iron, steel scrap and foundry return.Composition is C:3.0-3.5%, Si:1.8-2.5%, Mn:0.6-1.2%, P:1.2-1.5%, S:＜0.1%, the alloy that adds has Cr, Mo, Cu, B, V etc., though the cylinder sleeve of this explained hereafter can obtain metallographic structure preferably and graphite form, mechanical property is difficult to satisfy the requirement of ship rule.
Summary of the invention
The purpose of this invention is to provide a kind of mechanical property and meet ship rule standard-required, improve the cylinder sleeve quality, reduce scrap rate, make the cylinder sleeve of production obtain the producing method for casting large power diesel engine cylinder jacket of good operating performance.
The object of the present invention is achieved like this: a kind of producing method for casting large power diesel engine cylinder jacket, it is characterized in that: in weight part, with pig iron 10-20 part, steel scrap 40-50 part, after foundry returns 40-50 part is mixed, adding carburelant in cold stock melts, each constituent content of adjustment reached after the spectrum chemical examination was carried out in sampling behind the molten iron is melting: C:3.05-3.15%, Si:1.2-1.35%, Mn:0.5-0.6%, P:0.23-0.27%, S:0.05-0.06%, Cu:1.25-1.35%, V:0.14-0.16%, B:0.026-0.032%, the molten iron for preparing is warming up to 1500 ℃, casts after calm 10 minutes.Foundry returns is the rising head clout that cuts down in cylinder sleeve waste material and the diesel cylinder sleeve castingprocesses of scrapping after the fragmentation.The raw material that adds is counted 10 parts of the pig iron, 40 parts of steel scraps, 50 parts of foundry returns with weight part.
Producing method for casting large power diesel engine cylinder jacket provided by the present invention, by adjusting the pig iron, steel scrap, the ratio of foundry returns, reach proper mechanical capacity and metallographic structure, because of the heredity of the pig iron comparatively outstanding, adding too much to cause the crystal grain of foundry goods thick, foundry returns is because of through repeatedly remelting, be the less high-quality batching of detrimental impurity, the adding of steel scrap can improve the foundry goods mechanical property by a relatively large margin, and novel process adopts the steel scrap of a spot of pig iron and big proportioning, the proportioning process of foundry returns, adopt the method for carburetting to adjust the foundry goods carbon content, improved the quality of the cylinder sleeve of casting to obtain the high-quality molten iron that conformance with standard requires.
Embodiment
Embodiment one:
In the casting smelting process of cylinder sleeve, adopt the pig iron of 100Kg, the steel scrap of 400Kg, Mn content is less than 0.5% in the steel scrap, and the foundry returns of 500Kg, foundry returns are scrapping the cylinder sleeve waste material and cutting the rising head clout that cuts off in the diesel cylinder sleeve castingprocesses after the fragmentation.Add above-mentioned material in the cold stock and add carburelant, carburelant adopts graphite granule, heat and melt, wait to melt and adjust again after the chemical examination of molten iron sampling carrying out spectrum in the span of control that each element reaches C:3.05-3.15%, Si:1.2-1.35%, Mn:0.5-0.6%, P:0.23-0.27%, S:0.05-0.06%, Cu:1.25-1.35%, V:0.14-0.16%, B:0.026-0.032%.The molten iron for preparing is warming up to 1500 ℃, casts after calm 10 minutes.
Embodiment two:
In the casting smelting process of cylinder sleeve, adopt the pig iron of 150Kg, the steel scrap of 450Kg, Mn content is less than 0.5% in the steel scrap, and the foundry returns of 450Kg, foundry returns are scrapping the cylinder sleeve waste material and cutting the rising head clout that cuts off in the diesel cylinder sleeve castingprocesses after the fragmentation.Add above-mentioned material in the cold stock and add carburelant, carburelant adopts graphite granule, heat and melt, wait to melt and adjust again after the chemical examination of molten iron sampling carrying out spectrum in the span of control that each element reaches C:3.05-3.15%, Si:1.2-1.35%, Mn:0.5-0.6%, P:0.23-0.27%, S:0.05-0.06%, Cu:1.25-1.35%, V:0.14-0.16%, B:0.026-0.032%.The molten iron for preparing is warming up to 1500 ℃, casts after calm 10 minutes.
In castingprocesses, adjust each component content, add graphite granule when adjusting the content of C; Add 75 ferrosilicon when adjusting Si content; Add ferromanganese when adjusting Mn content; Add ferrophosphorus when adjusting P content; Add copper coin alloy or brass when adjusting the content of Cu; Add alum iron when adjusting the content of V; Add ferro-boron when adjusting the content of B.The content of S is generally higher, because the affiliation that adds of manganese generates manganese sulfide, makes that the content of sulphur reaches prescribed value in the molten iron.Pour into a mould after the molten iron calmness through preparing.The tensile strength 265Mpa of net result, unit elongation 0.45%, graphite form A
4Level.The tensile strength of S46 machine 3# is 285Mpa, unit elongation 0.42%, graphite form A
3-4Level.
Claims (3)
1, a kind of producing method for casting large power diesel engine cylinder jacket, it is characterized in that: in weight part, with pig iron 10-20 part, steel scrap 40-50 part, after foundry returns 40-50 part is mixed, adding carburelant in cold stock melts, each constituent content of adjustment reached after the spectrum chemical examination was carried out in sampling behind the molten iron is melting: C:3.05-3.15%, Si:1.2-1.35%, Mn:0.5-0.6%, P:0.23-0.27%, S:0.05-0.06%, Cu:1.25-1.35%, V:0.14-0.16%, B:0.026-0.032%, the molten iron for preparing is warming up to 1500 ℃, casts after calm 10 minutes.
2, producing method for casting large power diesel engine cylinder jacket according to claim 1 is characterized in that: foundry returns is the rising head clout that cuts down in cylinder sleeve waste material and the diesel cylinder sleeve castingprocesses of scrapping after the fragmentation.
3, producing method for casting large power diesel engine cylinder jacket according to claim 1 is characterized in that: the raw material of adding is counted 10 parts of the pig iron, 40 parts of steel scraps, 50 parts of foundry returns with weight part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100196910A CN100532607C (en) | 2005-10-25 | 2005-10-25 | Producing method for casting large power diesel engine cylinder jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100196910A CN100532607C (en) | 2005-10-25 | 2005-10-25 | Producing method for casting large power diesel engine cylinder jacket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1749425A true CN1749425A (en) | 2006-03-22 |
| CN100532607C CN100532607C (en) | 2009-08-26 |
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ID=36605080
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100196910A Active CN100532607C (en) | 2005-10-25 | 2005-10-25 | Producing method for casting large power diesel engine cylinder jacket |
Country Status (1)
| Country | Link |
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| CN (1) | CN100532607C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225565A (en) * | 2013-04-07 | 2013-07-31 | 江苏爱吉斯海珠机械有限公司 | Cylinder liner of high-horsepower diesel engine and production method thereof |
| CN109957705A (en) * | 2019-04-08 | 2019-07-02 | 河北恒工机械装备科技有限公司 | A kind of A type graphite cast iron profile material and preparation method thereof |
-
2005
- 2005-10-25 CN CNB2005100196910A patent/CN100532607C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225565A (en) * | 2013-04-07 | 2013-07-31 | 江苏爱吉斯海珠机械有限公司 | Cylinder liner of high-horsepower diesel engine and production method thereof |
| CN109957705A (en) * | 2019-04-08 | 2019-07-02 | 河北恒工机械装备科技有限公司 | A kind of A type graphite cast iron profile material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100532607C (en) | 2009-08-26 |
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| PB01 | Publication | ||
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Effective date of registration: 20090327 Address after: 93, two Xiling Road, Hubei, Yichang Province, China: 443302 Applicant after: Yichang Marine Diesel Engine Co., Ltd. Address before: 93, two Xiling Road, Hubei, Yichang Province, China: 443302 Applicant before: Yichang Marine Diesel Engine Plant |
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Owner name: YICHANG SHIPPING DIESEL ENGINE CO., LTD. Free format text: FORMER OWNER: YICHANG SHIPPING DIESEL ENGINE PLANT Effective date: 20090327 |
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